Polished Eucryptite EU119 chalcedony Alcheringa narrina from the Archaean

Alcheringa narrina from the Archaean Meentheena Member within the Tumbiana Formation

Rainforest Jasper slab

OG184   A matching pair of polished Orbicular Granite halves with natural rough backs

Weighs 266 grams

Polished Eucryptite EU119 chalcedony Alcheringa narrina from the ArchaeanEU119 Eucryptite rough rock, cut and polished on one side with a natural back. A fluorescent mineral ! Pale blue associated mineral is Cleavelandite. Dimensions at widest points approximately 95 mm x 85 mm x 35 mm thick. Weighs 388 grams. Eucryptite is a lithium aluminium silicate that occurs in LCT pegmatites. Under shortwave UV light it fluoresces a deep red colour. From near Norseman in Western Australia